Fast 90 with 224 cam... too much?
Fast 90 with 224 cam... too much? I'm looking at getting a Fast intake, and i'm wondering if the fast 90 would be a step in the right direction or overkill.
My setup is: stock 346 bottom end, TR 224 cam (114lsa), TEA 5.3 stg. 1.5 heads, an ls6 intake, ported tb, MAC mid lengths w/ory, PT4000, stock 4l60e, 3.73's.
I'm still new to this efi stuff, i'm used to carbs. I know it's very easy to over carb a motor, so i imagine it would be just as easy to over TB it as well.
A few more questions;
will the fast 90 intake work with a smaller tb? (i assume not, since there would be no point in having two manifolds if they did).
Will my stock injectors/pump be able to keep up with a 90mm tb?
I'm sure this has all been covered before, but i tried searching and didn't come up with much, thanks for the help.
Eric
My setup is: stock 346 bottom end, TR 224 cam (114lsa), TEA 5.3 stg. 1.5 heads, an ls6 intake, ported tb, MAC mid lengths w/ory, PT4000, stock 4l60e, 3.73's.
I'm still new to this efi stuff, i'm used to carbs. I know it's very easy to over carb a motor, so i imagine it would be just as easy to over TB it as well.
A few more questions;
will the fast 90 intake work with a smaller tb? (i assume not, since there would be no point in having two manifolds if they did).
Will my stock injectors/pump be able to keep up with a 90mm tb?
I'm sure this has all been covered before, but i tried searching and didn't come up with much, thanks for the help.
Eric
TECH Veteran
Joined: Aug 2003
Posts: 4,954
Likes: 1
From: Kent WA
I don't think it would be overkill at all... heads/cam packages find a pretty decent benefit from a 90/90 setup once the tune is tweaked to account for it. If you have the money to spend, go ahead and get it. 
You can't "over TB" a fuel injected vehicle....Its not relying on carb signal and airspeed to meter and correctly atomize fuel....that task is handled much more efficiently by your fuel injectors. The TB is simply an "air valve" and it will only allow whatever the engine is capable of drawing thru it. Too small a TB can hurt you, but there is almost no such thing as too big. The FAST 90 even on a mild H/C car is worth a solid 15 RWHP all else being equal. As someone else said, if you have the money, go for it....it offers a sizable power gain without hurting low speed torque production (like installing a larger cam to see the same "peak" gains the FAST 90 set-up will provide).
Every dyno test I have personally been involved in has liked the FAST set-up....even a bone stock LS1 gained 10-12 HP with no other changes (and that was a 78 mm test).
Go for it....
Tony M.
Every dyno test I have personally been involved in has liked the FAST set-up....even a bone stock LS1 gained 10-12 HP with no other changes (and that was a 78 mm test).
Go for it....
Tony M.
TECH Enthusiast
Joined: Nov 2004
Posts: 659
Likes: 0
From: Red Stick, LA
Originally Posted by Tony Mamo @ AFR
You can't "over TB" a fuel injected vehicle....Its not relying on carb signal and airspeed to meter and correctly atomize fuel....that task is handled much more efficiently by your fuel injectors. The TB is simply an "air valve" and it will only allow whatever the engine is capable of drawing thru it. Too small a TB can hurt you, but there is almost no such thing as too big. The FAST 90 even on a mild H/C car is worth a solid 15 RWHP all else being equal. As someone else said, if you have the money, go for it....it offers a sizable power gain without hurting low speed torque production (like installing a larger cam to see the same "peak" gains the FAST 90 set-up will provide).
Every dyno test I have personally been involved in has liked the FAST set-up....even a bone stock LS1 gained 10-12 HP with no other changes (and that was a 78 mm test).
Go for it....
Tony M.
Every dyno test I have personally been involved in has liked the FAST set-up....even a bone stock LS1 gained 10-12 HP with no other changes (and that was a 78 mm test).
Go for it....
Tony M.
Even over the LS6 intake LS1's?
Originally Posted by BBQLS1
Even over the LS6 intake LS1's?
and what would the gain be going from LS6 intake ported stock TB to a LSX 90/90 setup on a bolt-on car w/ an F14 cam and 100shot nx wet?
Trending Topics
Originally Posted by BoneSS
That is what I would like to know:
Mild h/c
LS6/Ported TB
vs
90/90 setup
Mild h/c
LS6/Ported TB
vs
90/90 setup
Eric
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
If you wanted to see a real boost...I would suggest a larger cam to complement the FAST intake.....maybe some thing around 230/230 .598/.598 112 lsa....still would be streetable....but would move the rev's farther up...and use that larger intake. ENJOY!
TECH Fanatic
Joined: Dec 2001
Posts: 1,060
Likes: 0
From: MI
Ok I run a small cam B1 221/221- >559/.559 and stage 2 heads and I gained 27rwhp & 13rwtq over my LS6 intake and ported TB with my 90mm FAST intake & TPIS 90mm TB. Both Dyno's were done on the same Mustang Dyno.
Originally Posted by 98darkbird
If you wanted to see a real boost...I would suggest a larger cam to complement the FAST intake.....maybe some thing around 230/230 .598/.598 112 lsa....still would be streetable....but would move the rev's farther up...and use that larger intake. ENJOY!
I drive this car no less than 80 miles a day, and i love mildness of my 224 cam. i'm sure it would still be streetable with a 230/230, but i see no point in changing something i'm happy with. Right now i see the intake as my bottleneck. On top of all that, TEA told me to stay below at or below a 228/228 cam with these heads.
Eric
